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Demonstration Compass
4 Magnetic needle on plastic support with a brass pivot. Unit of Sale :Each..
Large Compass
This magnetic compass is extra large (90mm, 3 1/2 diameter). Comes in a bright colored plastic case ..
Pair of Magnetic Needles
Two 5 _ long magnetic needles with colored poles are mounted on plastic stands with needle bearings...
Student Compass-Set of 10
20mm, 7/8 diameter compasses for magnet experiments. Aluminum case with glass top. Unit of Sale :Set..